Metal-rolling machine.



N. P. SJOBRIING.

METAL ROLLING MACHINE.

APPLICATION FILED JULY 28. I913.

1,155,522.] I I Patented 00t.5,1915.

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IHII i i I I I i i I I I I E E I F I 1 l I I I I I I I I g l I l i 1 r, l I I I I I I I J I ll I: I |I I I ll I ,1 I u I I I 1 I N. P. SJOBRING.

METAL ROLLING MACHINE.

APPLICATION man 1ULY28.1913- Patented 4 Oct. 5, 1915.

2 SHEETS-SHEET 2.

NELS P. SJOBRING, 0F CHICAGI ILLINOIS.

METAL-ROLLING MACHINE.

To all whom it may concern:

Be it known that I, NELs P. SJoBRme, a citizen of the United States of America, and

a resident of Chicago, county of Cook, and

- ing a plurality of pairs of dies, said dies being adapted to form and feed the metal through the machine, and the said means being arranged to permit different dies to rotate at like peripheral speeds regardless of variations in their respective diameters; to provide a metal forming machine in which a plurality of sets of "graduated dies are employed, adapted for operating dies of a great variety of sizes and handling stock of different widths; to provide a machine of this class which does not require individual adjustment of each pair of dies each time a new strip of stock is started through the machine.

Figure l is a plan View of a metal forming machine constructed according to this invention. Fig. 2 represents a side elevation of the machine. Fig. 3 represents an end elevation. Fig. 4 shows a sectional detail of gearing employed in the machine.

In metal rolling machines of this general type it is customary to draw the stock between pairs of roller dies which are free to rotate according to the speed of the metal operated upon, or the stock is fed by positively driven dies. The former case necessitates an adjustment, of the dies each time a new piece of stock is fed into the machine,

as it is necessary to first separate the cooperating dies and then to successively adjust toward each other each pair of dies as machine and one end of the stock is drawn through the radually brought to the desired shape. 11 the latter case the dies must be of exactly the correct proportions or 1 driven at such speeds that the metal will not become distorted while being operated Speciflcation of Letters Patent.

' Patented Oct. 5, 1915.

Application filed July 28, 1918. Serial No. 781,808.

matically controlled as required by the work performed. It is also possible with the present invention to employ in a single machine driven dies of many different sizes so as to shape either narrow or wide strips of metal.

Referring to the drawings, the side frames of the machine are designated by the numerals 1 and 2. These frames are connected together by tie bars 3 and slidably mounted on the tie bars is an adjustable guide frame'el. The frame 4 is adjustable for the purpose of accommodating any desired sizes of dies and width of metal stock. The dies indicated by the numeral 5 in Figs. 1 and 3 are arranged in cooperating pairs, and it may be seen from Fig. 1 that the pair of dies at the right of the machine, at which side the stock to be operated upon enters the machine, are more nearly cylindrical than the dies at the left of the machine.

The intermediate pairs of dies are graduated so that after the metal leaves the first set of dies it will be successively operated upon by the different sets of dies and gradually brought to the desired shape by the pair of dies at the left (Fig. 1).

Power is applied to the machine through a pulley 6 fast to a drive shaft 7 journaled in frames 1 and 2. Shaft 7 carries fast a pinion 8 meshing with gears 9 and 10 fast to shafts 11 and 12 journaled in bearings 13. Pinions 14 on shafts 11 and 12 mesh with gears 16 which are mounted on die supporting shafts 17 The gears 16 through intermediate pinions 18 serve to communicate movement to gears 19 and 19.1 also mounted on die supporting shafts 17. Located above each die supporting shaft are companion die supporting shafts 20. I The shafts 17 and 20 are adjustable toward and away from each other to accommodate dies of different diameters, the means for adjusting the shafts being screws 21 passing through the frame 2 and adjustable frame 4 and engaging blocks 22 slidably mounted in uprights 24. The intermediate gears 18 are carried by shafts 25 journaled in blocks 26, also slidable in the uprights 24 secured to frame 2. Blocks 26 are adjustable by means of screws 27 and 28. Screws 27 are threaded through flange 29 of frame 2, while the screws 28 are threaded through the heads of bolts 30 secured to uprights 24 as shown .in Fig. 2. Shafts 11 and 12 are also adjustable in their supports on frames 1 and 2, in order that pinions 14 may be properly meshed .with gears 16 when the dies are moved toward or away from each other, in the same manner and for the same purpose that pinions 18 and their supporting shafts are adjustable.

To secure frame 4 at any desired point al ong tie bars 3 it is provided with a separate clamping member31 (Fig. 3.) passing below tie bars 3 and adjustably secured to the frame 4 by bolts 32. Thus by means of these bolts the member 31 may be caused to tightly grip the tie bars 3.

A clutch 33 is provided, operating by a treadle 34 (Fig. 3) for the purpose of connecting and disconnecting pulley 6 from drive shaft 7 as required for starting and stopping the machine.

The gears 16 and 19 are driven by frictional engagement with their respective, shafts 17 the specific construction employed for this end being shown in Fig. '4. Each gear 16 has a pair of cone surfaces 35 and 36 for engagement with exterior conical surfaces 37 and 38 on a sleeve 39, splined to a shaft 17, and a collar 40 surrounding the reduced portion 41 of sleeve 39 and splined to said sleeve. The reduced part 41 of sleeve 39 is threaded at its outer end for the reception of a nut 42. By means of this nut the conical surfaces 37 and 38 respectively of sleeve 39 and collar 40 may be engaged with any degree of frictional contact with the conical surfaces 35 and 36 of gear 16. It may be seen from this construction that it is possible for gears 16 to rotate at a different rate than their supporting shafts 17, but that such relative rotation cannot result in turning nuts 42 as the latter are not in contact with gears 16 but are spaced therefrom by collars 40 which rotate with shafts 17 and sleeves 39. The gear 19.1 at the lefthand end of the machine is preferably secured to its supporting shaft 17 and therefore controls the rate of speed through the machine of the material acted upon.

In operating the device the metal stock to be operated upon is caused to enter the machine between the frames 2v and 4 at the right side of Fig. 1. As it passes between the first set of dies it is but slightly bent, but is successively acted upon by the succeeding sets of dies until emerging from the lefthand end of the machine in the desired form.

The lower dies being driven through frictional engagement with their respective supporting shafts,'the rate of speed of stock passing through the machine will be uniformly maintained, due to the fact that the rotation of the respective dies is frictionally regulated to accommodate the movement of the stock regardless of differences in the diameters of the respective pairs of dies. If it is desired to change the dies for operating upon a difierent size of stock this may be this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim:

1. In a machine of the class described the combination of a continuous positive gear .train, a series of rolls each frictionally driven connected therewith, and a series of idler rolls to coact with said frictionally driven rolls to reform metal strips passed therebetween.

2. In a machine of the class described the combination of a continuous positive gear train, a series of frictionally driven rolls any one of which is capable of differential movement with respect to the others without interfering with the drive of the others, and a series ofidler rolls adapted to coact with said frictionally driven rolls to reform metal passed therebetween.

3. In a machine of the class described the combination of a plurality of pairs of roller dies, means for frictionally driving one of each pair of said dies, the remaining die of each pair of dies adapted to be driven by the material operated upon, and adjustable means above and belowsaid pairs of roller dies for adjusting the same.

4. In a device of the class described the combination of a supporting frame, an adjustable sliding frame thereon, uprights in said frames, a plurality of movable members in each of said uprights adapted to be vertically adjusted so as to independently move toward or away from each other, a plurality of pairs of upper and lower roller dies journaled in said members, and frictional means for independently driving each of said lowermost dies.

5. The combination of a main frame, a slidable auxiliary frame mounted thereon, a

series of graduated pairs of roller dies adring frictionally engaging said sleeve, a

friction collar spline'd on said sleeve between said sleeve and ring, and adjustable means on the end of said'sleeve for retaining said collar in frictional contact with said ring.'

7. In a machine of the class described a main frame, main driving gears, a plurality of pairs of upper and lower roller dies, said main gears and dies mounted between the side walls of said main frame, a slidably adjustable auxiliary frame mounted on said main frame between said gears and dies, a gear train driven by said gears disposed on the outside of said main frame, and frictional driving connections between each of 15 said lower dies and said gear train.

Signed at Chicago this 23d dayof July,

NELS P. SJOBRING. Witnesses:

EDWIN PHELPS, M. IRENE HU'roHINGs, 

